Manufacture of nuts and similar articles



J. R. BLAKESLEE.

MANUFACTURE OF NUTS AND SIMILAR ARTICLES.

APPLICATION FILED lULY23,1919.

1 384:, 1 1 8 Patented July 12, 19211:

I INVE/V'TOE/ 7 JZ/m BB/akes/ce;

onrnn srares Jon-N R. BLAKESLEE, or CLEVELAND. OHIO, ASSIGNOR 1 0 THE AJAX. MANUFAC TUBING COMPANY, or CLEVELATDID, SE10, aoonrone'rron'or OHIO;

MANUFACTURE OF NUTS Application filed July 23,

T 0 all whom it may concern:

Be it known that 1, JOHN R. BLAKESLEE', a citizen of the United States, and a resident of Cleveland, county of Cuyahoga, State of Ohio, have invented a new and useful linprovement in the Manufacture of Nuts and Similar Articles, ofwhich the following is a specification, the principle of the invention being herein explained'and the best mode in which I have contemplated applying that principle, so as to distinguish it -from other inventions.

The present invention, relating, as indi cated, to the manufacture of nuts and similar articles, is directed to an improved method ofmanufacturing nuts, bolts and the like from a solid bar of stock of less dia1neter than the finished nut or bolt head. To the accomplishment of the foregoing and related ends, said invention, then, consists of the means hereinafter fully described and particularly pointed out in the claims.

I The annexed drawing and the following description set forth in detail one improved method of carrying out the invention, such disclosed mode, however, constituting but one of the various ways in which the principle of the invention may be used.

In said annexed drawing Figure 1 is a transverse longitudinal View through the dies and stock illustrating the first operation in the formation of a head on a bolt; Fig. 2 is a similar view illustrating the position of the previously formedblanl: in the finishing dies previous to the finishing operation; Fig. 3 is a view similar to Fig. 2, but showing the bolt head after the finishing operation; Fig. 4 is a transverse sectional view on the line 44 in Fig. 3; Fig. 5 is a view corresponding to F 1, but showing the first step in the manufacture of a nut; Fig. 6 is a longitudinal sectional view through the dies for carrying out the second step in the manufacture of a nut; Fig. 7 is a view similar to Fig. 6, but showing the nut as formed before separation from the bar of stock; and Fig. 8 is a similar View showing the final operation in the making of the nut.

Referring now to Fig. 1, there are shown die parts 1, 2, and 3 of which the die 1 is die for receiving in an opening therethrough a bar of stock 4 and holding the same during Specification of Letters Patent.

AND SIMILAR ARTICLES.-

1919. Serial No. 312,722.,

the preliminary forming of the bolt heath Thedies 2 and 3 are in effect a singledie movable axially with respect to the die 1 and stock bar 4 for upsetting and preliminarily forming the nut on the bar l-r In time operation the stock'bar is projected of the die part 3. In an upsetting operation like this one there is thrown out between the stock bar '4 and the head or upset portion 5. a thin fire or flash of metal'6, which extends more or less irregularly,radially outward from the'bottom of the stock bar.

In the next operation this radial flashof metal is utilized to positionthe stock bar and upset head in a holding die 7, which is provided with a recess 8 for receiving the flash 6. This die head is of an inside diameter sufficient to receive therein the upset head 5, and this diameter is continued at 9 for a distance along the stock bar slightlv greater than the longitudinal dimension of the head A die 10, operating axially with respect to the stock bar and fitting snugly within the die 7, then forces the stock bar and head to the left from the position shown in Fig. 2 into the position of Fig. 3, and against the shoulder 11 in the die 7. The flash 6 is thus rimmed off and left in the recess 8 of the holding die, from which it may be dropped upon removal of the now finished bolt and head.

In Figs. 5, 6, 7 and 8 T have shown the application of this method above to the manufacture of nuts from stock bars of less diameter than the diameter of the finished nut, and in this application of my method, the first step involves the upsetting ofa stock bar 12 into a tapered head 13 by means of holding dies 14, into which the stool: bar is extended, and by a reciprocating plunger die 15. By this upsetting operation a shoulder 16 is formed at the base of the tapered or upset portion, and this shoulder is used to position the upset head against the outer face of holding dies 17 for the next operation. The upset portion is then upset further and finished into the form of a nut 18 by dies 19 and 20, operated together to Patented July 12; 19 21. 2

form both the sides and outer. face of the upset portion. During this operation a thin flash of metal 21 is thrown out radially be tween the faces of the dies 19 and 17, and

thisflash of metal is used to position the upset, but still connected, nut 18 in a recess 22 of the holding dies 23 used in the cutting-olf operation, shown in Figs. 7. and 8; In this operation the dies 23 are formed at the base of arecjess 25 of the same diameter and shape'of the finished nut, and a die 26,

which is shown in Fig. 8, is moved axially to drive through the center of the nut 18,

after first forcing back both the stock bar and the nut against the shoulder 24, and this die then is forced directly through the center of the nutand forces the stock bar back clear of the nut, whichmay' then be removed and isfinished except for tapping.

The present method is an extremely simple and (BCOIIOIIIICQLLOIIG, and as will be seen involves but'very few operat1ons,and those,

ones which may be readily carried out by.

simply constructed dies.

'Other modes of applying the principle of my invention may be employed instead of the one explained, change being made as regards the method herein disclosed, provided the step or steps stated by any of the following claims or the equivalent of such stated step or steps be employed.

I therefore particularly point out and distinctly claim as myinventionz- 1. A method of making nuts and the like, which consists in upsetting the end of such stock bar into a nut of the desiredisize and j shape with a flash, of metal;at the base thereof, and then cutting off such flash and simultaneously punching centrally through such nut of the same shape and size as said 7 stock bar and'also punching said bar loose from said nut.

3. A-method ofmaking nuts and the like, which consists in upsetting a stock bar to form a shoulder, further upsetting said stock bar to the desired shape and size of the fimshed articlewith a flash'of metal, and simultaneously holding such flash and punching such article longitudinally to remove such fiash and sever such article from said stock bar.

Signed by me, this 18th day of July, 1919.

JOHN R. BLAKESLEE; 

